AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 1 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
AMG5716A8R-
DR
Instruction Manual
Single Channel Video Receive Unit with one Bi-directional
Data Channel and six Uni-directional Alarms plus Dual
Redundant Operation for a Singlemode Fibre Link
The AMG5716A8R-DR is a rackmount one channel video receive unit designed to receive 1 video
signal plus 6 Uni-directional alarms and transmit and receive 1 data signal and provides Dual
Redundant operation over two Singlemode optical fibres.
The AMG5716A8R-DR is designed to plug into an AMG2009 or AMG20015 subrack, which in turn fits
into a 19" rack system.
The AMG5716A8R-DR is designed to operate with two AMG5715A7 / AMG5715A7R single channel
video transmit units for Dual Redundant operation in a point to point configuration. The R suffix in the
partno. indicates a rackmount configuration.
AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 2 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
Contents
Introduction 3
Unit Functional Schematic.................................................................................................................. 3
Connections 3
Video Output Connections.................................................................................................................. 3
Power Connection .............................................................................................................................. 3
Optical Connections Singlemode 3
Optical Connection ............................................................................................................................. 4
Front Panel Indicators 5
Power LED.......................................................................................................................................... 5
Low Speed Data LEDs ....................................................................................................................... 5
Alarm LEDs......................................................................................................................................... 5
Data and Alarm Channel Configuration 6
Data Channel Configuration ............................................................................................................... 6
Data Channel Configuration ............................................................................................................... 7
Data Interface Connections ................................................................................................................ 7
Alarm Interface Connections .............................................................................................................. 8
Physical Information 8
Dimensions ......................................................................................................................................... 8
Mounting Details................................................................................................................................. 8
Safety 8
Maintenance and Repair 8
AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 3 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
Introduction
Unit Functional Schematic
The AMG5716A8-DR receives one
video signal plus one data and six
uni-directional alarm signals from
either of two AMG5715A7 transmit
units A & B.
It also transmits 1 data signals to the
selected AMG5715A7 A or B unit.
Dual Redundancy is provided such
that if the fibre optic signal is lost from
transmit Channel A, the signal and
data from transmit Channel B is used
instead.
Channel failures alarm outputs are
provided to indicate the loss of either
or both A/B optical signal.
A test mode input is also provided
which may be used to manually select
channel B for validation purposes.
Connections
Video Output Connections
No. of channels.................................... 1
Connectors .......................................... 75 ohm BNC Socket.
Output Impedance ............................... 75 ohm terminated.
Output Level ........................................ 1 Volt p-p nominal
Frequency Response .......................... 10Hz to 7MHz.
Power Connection
Power supply .......................................From plug in connection on the AMG2009 or AMG2015 subrack
Power consumption ............................. 1.5 Watts max.
Optical Connections Singlemode
No. of Optical Connections.................. 1 per video channel
Optical Fibre ........................................ Singlemode
Connector ............................................ SC/PC
Primary Optical Launch Power............ -10dBm
Transmit Wavelength .......................... 1550nm
Primary Optical Sensitivity................... -30dBm
AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 4 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
Receive Wavelength............................1310nm
Minimum Optical Dynamic Range .......20dB.
Optical Connection
The AMG5716A8R-DR connections are illustrated in the following example which shows two
AMG5715A7 transmit units together with an AMG5716A8R-DR rackmount receive unit configured as
a dual redundant single channel point to point system.
AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 5 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
Front Panel Indicators
The Dual Redundant feature means that of the 2 Channels (A & B) available - the LED's representing
the active channel are used. For example - if Channel A is active then the LEDs relevant to Channel A
are displayed. Alternatively if Channel B is active then the LED's relevant to Channel B are displayed.
Power LED
Power / Video / Opto ........................... Green - Video present & opto sync.
R/G - Opto sync. but no video present.
Red - No opto sync.
Off - No power applied to unit.
Low Speed Data LEDs
Data Present IN (RS485 or RS422) .... Green - logic zero (+V, -V) present on IN+, IN-
Red - logic one (-V,V+) present on IN+, IN-
Off - tri-state off or no connection on IN+, IN-
Data Present IN (RS232) ....................Green - logic zero (+V) present on input IN+
Red - logic transitions present on input IN+
Off - logic one (-V) present on input IN+
IN corresponds to the data signals being transmitted onto the optical fibre.
Data Present OUT (RS485 or RS422) Green - logic zero (+V,-V) present on OUT+, OUT-
Red - logic one (-V,+V) present on OUT+, OUT-
Off - tri-state off or no connection on OUT+, OUT-
Data Present OUT (RS232) ................ Green - logic zero (+V) present on OUT+
Red - logic transitions present on OUT+
Off - logic one (-V) present on OUT+
OUT corresponds to the data signals being received from the optical fibre.
Alarm LEDs
Channels 1-2
ALARM OUT........................................ Green - Alarm ON / Contacts closed.
Off - Alarm OFF / Contacts open.
Aux Ch A 1-4
ALARM OUT........................................ Green - Alarm ON / Contacts closed.
Off - Alarm OFF / Contacts open.
AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 6 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
Data and Alarm Channel Configuration
The AMG5716A8R-DR sends and receives data to/from one AMG5715A7 or AMG5715A7R
rackmount equivalent single channel transmit unit. The physical data interface RS-485, RS-422 or RS-
232 is selectable by the user with the slide switch mounted on the main PCB inside the enclosure.
6 uni-directional alarms are also provided, each of which can receive an on/off signal from an
AMG5715A7 and are typically used to convey contact closure status.
Data Channel Configuration
Each low speed data channel provides an RS-232, RS-422 (full duplex, four wire) or RS-485 (half
duplex, two wire) interface defined by the corresponding mode switch inside the enclosure. Every data
channel as shipped from the factory is set up for RS-485 operation unless otherwise requested.
The data input for both the RS-485 and the RS-422 modes detects a tri-state input condition by
monitoring the differential voltage level across the input. A differential level below 600mV positive or
negative will be detected as a tri-state condition. A level above 600mV positive or negative will be
detected as a logic 1 or logic 0 respectively. It is important therefore to terminate the RS-485 bus or
the RS-422 input bus using 120Ω if a pre-bias is present on the RS-485 or RS-422 bus.
A large number of third party equipment manufacturers apply a pre-bias on their RS-485 bus. This pre-
bias is applied by pulling one arm of the RS-485 bus high (+5 volts) and the other arm low (0 volts)
using high value resistors within the third party equipment. In order to ensure that the AMG equipment
detects a tri-state condition, then these resistors should have a value above 5kΩ. If the third party
bias resistors are less the 750Ω the bus can be multiple terminated as required to ensure that a tri-
state level is detected.
The system detects a tri-state input condition on the data channel bus when in RS-485 or RS-422
mode.
AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 7 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
Data Channel Configuration
The AMG5716A8R-DR is designed to operate with two AMG5715A7 or AMG5715A7R single channel
video transmit units to provide Dual Redundant functionality.
Each transmit unit is connected to the receive unit by a separate fibre or pair of optical fibres which
carry the Video and Serial data to/from each transmit unit. The incoming light signals from the fibres
are monitored by the receiver to determine which signal source (transmit unit) is to be used.
a) Normal situation : Channel A & Channel B light signals are both present - The data from Channel
A is used. Channel A/B failure alarm O/P's are inactive.
b) Channel A Failure : Channel B light signal only is present - The data from Channel B is used.
Channel A failure alarm O/P is active.
c) Channel B Failure : Chanel A light signal only is present - The data from Channel A is used,
Channel B failure alarm O/P is active.
Data Interface Connections
Data Channel Dual Redundant
Connector
Pin No. RS-485
[switch top]
RS-422
[switch middle]
RS-
232
[switch bottom]
Chan A/B Fail /
DR Test
1IN + (A) IN Test Mode IN -
2IN - (B) N/C
3GND GND GND CHB Fail O/P -
4CHB Fail O/P +
5CHA Fail O/P -
6CHA Fail O/P +
7IN/OUT + (A) OUT + (A) N/C
8IN/OUT - (B) OUT - (B) OUT Test Mode IN +
Note: (A) or (B) in brackets in the above table refers to RS-485 / RS-422 data specification.
The AMG5716A8R-DR provides 6 uni-directional alarm / contact closure outputs.
Alarm Output 1 : Provides a pair of normally open, volt-free contacts from a solid-state relay.
Alarm Output 2 : Provides a normally open, switched contact to 0V/GND from a solid-state relay.
Channel A Fail Output : Provides a pair of normally open, volt-free contacts from a solid-state relay.
Channel B Fail Output : Provides a normally open, switched contact to 0V/GND from a solid-state
relay.
Aux. Channel Alarm Outputs 1-4
Each alarm output uses an NPN open collector interface, with a maximum load current of 50mA at
+24Vdc.
AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 8 of 8 AMG5716A8R-DR Instruction Sheet
D17291-00.doc
Alarm Interface Connections
Alarms 1 & 2, Aux Channels A/B Alarms 1-4
Alarms 1-2 Aux. Channel A/B Alarms 1-4
Connector Pin
No. Alarm 1 Alarm 2 Aux Ch A Aux Ch B
1ALARM 1 OUT + ALARM 1 OUT +
2ALARM 2 OUT + ALARM 2 OUT +
3ALARM 2 GND GND GND
4ALARM 2 OUT + ALARM 3 OUT + ALARM 3 OUT +
5ALARM 1 OUT - ALARM 4 OUT + ALARM 4 OUT +
6ALARM 1 OUT + - -
Physical Information
Dimensions
Height...................................................3U Plug-in
Width....................................................7HP
Depth ...................................................170mm excluding connectors
Weight..................................................200grams
Mounting Details
The unit is designed to be mounted within an AMG2009 or AMG2015 Subrack on standard card
guides.
Safety
AMG Optical Fibre Products use Class 1 laser systems in accordance with EN 60825-2:2000.
It is always advisable to follow good practice when working with optical fibre systems. This includes:
Do not stare with unprotected eyes or with any unapproved collimating device at fibre
ends or connector faces, or point them at other people.
Use only approved filtered or attenuating viewing aids
For other safety issues and advice on good practice associated with optical fibre systems, please see
EN 60825-2:2000 or your local safety officer.
Maintenance and Repair
There are no user serviceable parts within AMG products. See unit data sheet for full specification.
In case of problem or failure, please call your local support centre or contact: AMG Systems Ltd. at
3 The Omega Centre, Stratton Business Park, Biggleswade, Beds., SG18 8QB, UK.
Phone +44 (0) 1767 600 777
Technical Support +44 (0) 1767 604 491
Email techsupport@amgsystems.com
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